Water pump?

[Garabaldi]

Not sure what this is. Has threads, so can't be all that old. Do you think it is a mini water pump?

 

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[cheese]

Looks like a valve for releasing air or steam. Threads have been used as a fastening device for over 150 years... Your item looks to be from the early 1900s to 1930s IMO.

 

[Bigcypresshunter]

I believe its from a toilet. I remember replacing them. The little valve can also be replaced.

 

[Bigcypresshunter]

I just realized how short it is. It would have to be a special short toilet tank or maybe Im wrong lol. I still think the principal is the same. I think its a water shut off valve of some kind.

 

[Garabaldi]

Appears as if you nailed it Bigcy.
Thank you.

 

[Bigcypresshunter]

It may be from one of those lo-boy toilets.

 

[dozer dan]

it is a float valve but from the large size i'd say it was for a livestock watering tank.